Aug 02 04:33:57.651 INFO checking md5-asm-0.4.2 against 1.27.2 for lazy_static-1
Aug 02 04:33:57.651 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:33:57.651 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:33:57.651 INFO running `"docker" "create" "-v" "/tmp/crater.U61Q9kCExIqK:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 04:33:57.930 INFO blam! eb53481e1c5ec46d71b6b3961dceba44b42d4ef158f972703a6281f0c2781496
Aug 02 04:33:57.933 INFO running `"docker" "start" "-a" "eb53481e1c5ec46d71b6b3961dceba44b42d4ef158f972703a6281f0c2781496"`
Aug 02 04:33:58.996 INFO kablam!    Compiling md5-asm v0.4.2 (file:///source)
Aug 02 04:34:01.927 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:34:01.927 INFO kablam!  --> benches/lib.rs:2:1
Aug 02 04:34:01.927 INFO kablam!   |
Aug 02 04:34:01.927 INFO kablam! 2 | #![feature(test)]
Aug 02 04:34:01.927 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:34:01.927 INFO kablam! 
Aug 02 04:34:01.927 INFO kablam! error: aborting due to previous error
Aug 02 04:34:01.927 INFO kablam! 
Aug 02 04:34:01.927 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:34:01.934 INFO kablam! error: Could not compile `md5-asm`.
Aug 02 04:34:01.934 INFO kablam! 
Aug 02 04:34:01.934 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 04:34:01.936 INFO kablam! su: No module specific data is present
Aug 02 04:34:02.832 INFO running `"docker" "rm" "-f" "eb53481e1c5ec46d71b6b3961dceba44b42d4ef158f972703a6281f0c2781496"`
Aug 02 04:34:02.994 INFO blam! eb53481e1c5ec46d71b6b3961dceba44b42d4ef158f972703a6281f0c2781496